They may have Plastic sealed open and bought them from a warehouse sale.
This Brother TN-850 Toner Cartridge Twin Pack in black (TN8502PK) is a great choice for those who need high-quality printing. The cartridges are genuine and original, ensuring that you get the best results every time. They are compatible with Brother printers and are designed to work efficiently with them. The pack includes two units, each with a yield of up to 1,500 pages. The print technology is laser, which provides sharp and clear text, graphics, and images. The color black adds to the professional look of your documents and prints. This item is perfect for those who need to print frequently and want to ensure that their prints are of the highest quality.